Intelligent fuel management and control system for thermal power plant

Abstract

The invention provides an intelligent fuel management and control system for a thermal power plant, and the system comprises an equipment system sensing layer, a data access layer, a data storage layer, a business application layer, and a display interaction layer. Work such as fuel process data gathering, interconnection and intercommunication among systems, flow optimization, decision suggestion providing and comprehensive information displaying is completed, and the problems that in the existing thermal power fuel production process, monitoring is not comprehensive, information islands are formed by all the systems, and emergency response is slow are solved. By constructing a unified management and control platform, interfaces of a plurality of systems are integrated, so that the operation process is simplified. And meanwhile, a data analysis module is introduced to intelligently diagnose abnormal data, so that the operation burden is reduced. And through system interface interaction and background automatic processing flow actions, manual decision making and operation links are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of power generation control, and in particular to an intelligent fuel management and control system for a thermal power plant. Background Art

[0002] In today's power plant operations, the fuel supply chain is crucial, and the coal handling control system is a core component. Currently, the coal handling control room console integrates operational screens from multiple subsystems. These screens operate independently, with widely varying methods and no standardized approach. Some operational screens, due to poor layout design, are located far from the operator's location. This forces operators to frequently move back and forth within the control room to view screens from various subsystems, significantly increasing unnecessary physical exertion and wasting time.

[0003] In terms of the actual coal handling process, this chaotic operation severely disrupted the production rhythm. Operators were constantly running between different operating areas, struggling to concentrate and effectively directing coal handling operations. This disrupted the previously smooth coal handling process, significantly reducing production efficiency.

[0004] Problems become even more pronounced when abnormalities arise during production. Operators are forced to switch back and forth between multiple independent system displays, reviewing relevant information one by one. This requires a thorough understanding of the operating principles and various parameters of each system. Furthermore, in the coal transportation and unloading process, operators repeatedly switch between multiple systems because they involve multiple different systems. This frequent switching significantly compromises the continuity of the entire fuel supply process and increases the likelihood of human error.

[0005] A patent literature search revealed a utility model patent with application number CN202420550463.4, which discloses an IoT architecture for intelligent fuel management and control in thermal power plants. The architecture comprises a management and control layer, a field layer, and a communication connection device. The management and control layer comprises an application Ethernet layer and a control Ethernet layer interconnected by computers. The field layer comprises a fuel processing system, a coal handling program control system, and a sensor and identification system interconnected by field equipment and computers. The control Ethernet layer and the application Ethernet layer share data via a server. The sensor and identification system connects to the application Ethernet layer via a communication connection device. The fuel processing system and the coal handling program control system connect to the control Ethernet layer via a communication connection device. The fuel processing system and the coal handling program control system are connected via control lines. The patent primarily describes the network architecture deployment for the intelligent fuel management and control system. Patent application number CN202111494025.8 discloses an intelligent fuel management and control system, including a centralized fuel management and control system, a digital coal yard, a digital laboratory, a video surveillance system, an access control system, a mobile app, and a fuel management information system. The digital coal yard includes a three-dimensional coal yard and coal blending and combustion management; the digital laboratory includes user authority management, system settings, full-process testing management, and system assistance; and the fuel management information system includes a plant-level local area network, a control station, an isolator, an application server, and a system server. This patent addresses issues such as irregular combustion management, low sampling and testing efficiency, and a lack of underlying perception of each system and data transmission and processing.

[0006] In summary, in response to the above-mentioned problems of the existing technology, researching an intelligent fuel management and control system for thermal power plants has become a key task that needs to be solved urgently. Summary of the Invention

[0007] In view of the defects in the prior art, the purpose of the present invention is to provide an intelligent fuel management and control system for a thermal power plant.

[0008] According to the present invention, a fuel intelligent management and control system for a thermal power plant is provided, comprising:

[0009] The equipment system perception layer includes the shore electronic system, ship unloader subsystem, coal conveyor program control subsystem, intelligent coal yard subsystem, coal water and coal slag treatment subsystem, coal slime filter press subsystem, belt scale subsystem, sampling subsystem, and belt vibration detection subsystem;

[0010] The data access layer includes a driver module that is used to collect and convert device data from each subsystem of the device system perception layer;

[0011] The data storage layer includes a real-time database and a relational database. The real-time database is used to store the device data collected and converted by the data access layer, and the relational database is used to store the basic data information and historical relationship data of each subsystem device;

[0012] The business application layer includes a permissions management module, an intelligent linkage module, a hierarchical alarm module, an intelligent reporting module, and a data interface module. The permissions management module is used to implement multi-level permissions control, granting different system permissions to different user roles, and implementing permission control for different levels of personnel in different systems. The intelligent linkage module includes event linkage submodules and time linkage submodules. The hierarchical alarm module manages alarm levels for each system and responds to different levels of alarms for different system devices. The intelligent reporting module generates data reports to provide users with a comprehensive understanding and analysis of the overall system operation status. The data interface module is used for data exchange between the system and other external systems, and through the establishment of data interfaces, data docking between systems is completed.

[0013] The display interaction layer includes a configuration display module, a large-screen display module, and a mobile application module. The configuration display module is used to display the real-time operating status of each subsystem, the large-screen display module is used to display the fuel and coal transportation process status, and the mobile application module is used for remote access.

[0014] Preferably, the shore electronic system comprises a voltage monitoring unit, a current monitoring unit and an energy consumption metering unit.

[0015] Preferably, the ship unloader subsystem includes a grab bucket speed sensor, a load weight sensor and a coal unloading efficiency calculation unit.

[0016] Preferably, the coal conveying program control subsystem includes a PLC controller, a belt conveyor speed regulating unit and a coal plow control unit.

[0017] Preferably, the intelligent coal yard subsystem includes a three-dimensional scanner, a coal pile modeling unit and a coal extraction path planning unit.

[0018] Preferably, the coal-water and coal-ash treatment subsystem includes a dosing control unit, a filter control unit and a sewage discharge cycle setting unit.

[0019] Preferably, the coal slime filter press subsystem includes a filter press control unit, a water pump control unit and a coal cake conveying control unit.

[0020] Preferably, the belt scale subsystem includes a high-precision weighing sensor, a flow data calibration module, a team coal delivery volume recording unit, and a daily report generation unit;

[0021] The sampling subsystem includes an automatic sampling robotic arm and a sample transmission pipeline;

[0022] The belt vibration detection subsystem includes an acceleration sensor, a vibration spectrum analyzer and a fault warning unit.

[0023] Preferably, the interaction between the belt scale subsystem and the coal conveying program control subsystem includes the following sub-steps:

[0024] Step a: The data access layer is connected to the belt scale subsystem through a dedicated driver interface to obtain the instantaneous coal flow collected by the belt scale sensor in real time, and transmit the instantaneous coal flow to the real-time database of the data storage layer for storage;

[0025] Step b: the event linkage submodule of the intelligent linkage module presets a coal flow threshold, and establishes an association relationship between the coal flow threshold and the equipment data point of the belt scale subsystem;

[0026] Step c: the event linkage submodule periodically reads the current coal flow from the real-time database, and triggers a corresponding event when it detects that the current coal flow exceeds the coal flow threshold;

[0027] In step d, the hierarchical alarm module executes a corresponding control method according to the type of event.

[0028] Preferably, the coal flow threshold includes a warning flow threshold and a dangerous flow threshold. When it is detected that the current coal flow exceeds the warning flow threshold, a warning event is triggered; when it is detected that the current coal flow exceeds the dangerous flow threshold, a dangerous event is triggered; for dangerous events, an emergency stop control instruction is sent to the coal conveying program control subsystem through the event linkage submodule, and the coal conveying program control subsystem immediately executes the equipment emergency stop operation after receiving the instruction; for warning events, the alarm information is pushed to the configuration display module, and a warning prompt information is generated on the operation interface.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. The system of the present invention can integrate the interfaces of various subsystems to achieve one-stop operation, so that operators no longer need to run around to view different screens.

[0031] 2. The system of the present invention introduces an intelligent early warning mechanism, which can monitor abnormal conditions in the production process in real time and accurately, and automatically push early warning information to minimize the risk of human misjudgment.

[0032] 3. The system of the present invention greatly improves the emergency response speed by comprehensively optimizing process automation, fundamentally ensuring the safe and efficient operation of power plant production. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0034] Figure 1 Schematic diagram of the system composition of an intelligent fuel management and control system for a thermal power plant according to an embodiment of the present invention;

[0035] Figure 2 Schematic diagram of the system architecture of an intelligent fuel management and control system for a thermal power plant in an embodiment of the present invention. DETAILED DESCRIPTION

[0036] The present invention will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those skilled in the art, several changes and improvements can be made without departing from the scope of the present invention. These all fall within the scope of protection of the present invention.

[0037] This invention aims to address existing problems in thermal power fuel production processes, such as incomplete monitoring, information silos between systems, and slow emergency response. By building a unified management and control platform, the interfaces of multiple systems are integrated, streamlining operational processes. Furthermore, a data analysis module is introduced to intelligently diagnose abnormal data, reducing operational burdens. Through system interface interaction and automated backend processing, manual decision-making and operational steps are reduced.

[0038] The intelligent fuel management and control system for thermal power plants of the present invention integrates various systems in the coal-fired production process and transforms the traditional fuel management model through automation and information technology. It completes the tasks of gathering fuel process data, interconnecting systems, optimizing processes, providing decision-making suggestions, and displaying comprehensive information. In the links of fuel transportation, stacking, storage, etc., it breaks the limitations of data islands and business islands, and realizes the intelligent integrated centralized scheduling and control of all fuel production of thermal power plants. It vigorously promotes the intelligent process around the key links of fuel management, significantly improves the work efficiency of the entire fuel management process, and promotes the fuel management of thermal power companies to a more intelligent stage.

[0039] Example 1:

[0040] Figure 1 FIG1 is a schematic diagram of the system composition of an intelligent fuel management and control system for a thermal power plant according to an embodiment of the present invention. Figure 2 Schematic diagram of the system architecture of an intelligent fuel management and control system for a thermal power plant in an embodiment of the present invention.

[0041] like Figure 1 、 2 As shown, this embodiment provides a fuel intelligent management and control system for a thermal power plant, including:

[0042] The equipment system perception layer includes the shore electronic system, ship unloader subsystem, coal conveyor program control subsystem, intelligent coal yard subsystem, coal water and coal slag treatment subsystem, coal slime filter press subsystem, belt scale subsystem, sampling subsystem, and belt vibration detection subsystem.

[0043] Each subsystem connects to the master control platform through interfaces, enabling real-time data sharing and command transmission. Based on pre-set logic, the system dynamically coordinates subsystems to ensure efficient fuel flow. Real-time data sharing among subsystems and intelligent scheduling from the master control platform comprehensively enhance the intelligent level of fuel management and control.

[0044] Specifically, the shore electronic system includes a voltage monitoring unit, a current monitoring unit and an energy consumption metering unit, which provides power for coal ships at port, monitors voltage, current and energy consumption data in real time, and uploads them to the main control platform through an interface, supporting energy efficiency analysis and ship-shore interactive management.

[0045] The ship unloader subsystem includes a grab speed sensor, a load weight sensor and a coal unloading efficiency calculation unit, which are used to monitor the operating parameters of the ship unloader (such as grab speed, load weight), fault signals and coal unloading efficiency, and dynamically adjust the operation rhythm to adapt to coal transportation needs.

[0046] The coal conveying program control subsystem includes a PLC controller, a belt conveyor speed control unit and a coal plow control unit. The PLC controls the belt conveyor, coal plow and other equipment to accurately adjust the coal flow speed and path to prevent coal blockage or idling.

[0047] The intelligent coal yard subsystem includes a 3D scanner, a coal pile modeling unit and a coal extraction path planning unit. Based on 3D scanning, it optimizes the shape, position and extraction sequence of the coal pile, and supports automatic coal panning and task pile extraction.

[0048] The coal-water and coal-slag treatment subsystem includes a dosing control unit, a filter control unit, and a blowdown cycle setting unit. It treats the power plant's coal-water and slag water. After coagulation, sedimentation, clarification, and filtration, the clean water is recycled for reuse, reducing water consumption for replenishment and blowdown. This subsystem acquires real-time status information from the dosing, purification, and self-circulating systems, sets the system's backwash and blowdown cycles, controls the activation and deactivation of filters, and performs system interlocking and unlocking control and blowdown settings.

[0049] The coal slurry filter press subsystem includes a filter press control unit, a water pump control unit, and a coal cake conveying control unit. The concentrated coal slurry water is pumped into the filter press for filtration. The filtered water is then discharged into the coal slurry water tank for recycling. The resulting coal cakes are transported via a belt conveyor, improving the coal slurry dehydration rate and allowing for recycling. This subsystem acquires real-time status information from the filter press system components, including the coal slurry tank, plunger pump, coal slurry buffer tank, filter press feed pump, clean water tank, and clean water pump. It also sets, starts, and automatically controls the parameters of the filter press equipment.

[0050] The belt scale subsystem includes a high-precision weighing sensor, a flow data calibration module, a team coal delivery volume recording unit, and a daily report generation unit. It measures the coal volume with high precision, calibrates deviations based on historical flow data, records daily coal delivery volume and team coal delivery volume, and generates daily reports.

[0051] The sampling subsystem includes an automatic sampling robotic arm and a sample transmission pipeline, which automatically collects coal samples and transmits them to the laboratory, correlating the coal quality data with the source ship.

[0052] The belt vibration detection subsystem includes an acceleration sensor, a vibration spectrum analyzer and a fault warning unit. The acceleration sensor analyzes the vibration spectrum and provides early warning of faults such as roller damage and belt tearing.

[0053] The data access layer includes a driver module, which is used to collect and convert device data from each subsystem of the device system perception layer to ensure a unified data format.

[0054] The data storage layer includes a real-time database and a relational database. The real-time database is used to store the real-time data of the equipment collected and converted by the data access layer to ensure that the information is updated immediately. The relational database is used to store the basic data information and historical relationship data of each subsystem equipment to facilitate in-depth analysis and decision support, and provide data support for the intelligent reporting module.

[0055] The business application layer includes the authority management module, intelligent linkage module, hierarchical alarm module, intelligent reporting module and data interface module.

[0056] The permissions management module implements multi-level permissions control to ensure secure system access. Different permissions are assigned based on user role levels. A multi-level permissions control mechanism is implemented to control permissions for different levels of personnel in different systems, down to each operational interface, preventing unauthorized operations and ensuring data security. Permission changes are subject to multiple audits, with traceable logging. This strengthens system security management, ensures the proper allocation of permissions, and ensures safe and efficient system operation.

[0057] The intelligent linkage module includes an event linkage submodule and a time linkage submodule, which coordinate the collaborative work of various subsystems. Among them, the event linkage submodule automatically triggers the linkage operation of the corresponding equipment according to the change of a certain parameter in the monitoring system to ensure timely response; the time linkage submodule automatically executes tasks according to the preset time nodes to ensure the accurate and orderly operation of the system.

[0058] The hierarchical alarm module is used to manage alarm levels by subsystem, monitor anomalies in real time, manage alarm module subsystems, refine alarm levels, respond to different levels of alarms of different system devices in a hierarchical manner, and push them to the corresponding responsible persons in real time to achieve rapid positioning and processing, thereby improving emergency response efficiency.

[0059] The intelligent reporting module is used to generate data reports, integrate multi-source data, and generate visual reports to help users fully understand and analyze the overall system operation status, provide intuitive reference for daily operations and decision-making, and facilitate efficient management.

[0060] The data interface module is used for data interaction between the system and other external systems. By opening up the data interface, efficient integration and external interaction of data between systems can be achieved.

[0061] The display interaction layer includes the configuration display module, the large-screen display module and the mobile application module.

[0062] The configuration display module is used to display the real-time operating status of each subsystem. Users can use this module to view the system operation status in real time, promptly identify and handle potential problems, quickly respond to abnormal situations, and avoid accidents from escalating.

[0063] The large-screen display module is used to display the operating status of the fuel and coal transportation process and is the management cockpit of the entire fuel and coal transportation process.

[0064] The mobile application module is used for remote access, enabling remote real-time control and improving management convenience and response speed.

[0065] In this embodiment, the interaction between the belt scale subsystem and the coal conveyor program control subsystem includes the following sub-steps (early warning and processing caused by equipment data changes):

[0066] Step a: The data access layer is connected to the belt scale subsystem through a dedicated driver interface, obtains the instantaneous coal flow collected by the belt scale sensor device in real time, and transmits the instantaneous coal flow to the real-time database of the data storage layer for storage.

[0067] Specifically, the driver module in the data access layer integrates with each subsystem through customized drivers. The driver communicates with the belt scale sensor in the belt scale subsystem, reading the belt scale's instantaneous flow rate. This data is then stored in the real-time database in the data storage layer.

[0068] Step b: the event linkage submodule of the intelligent linkage module presets a coal flow threshold value, and establishes an association relationship between the coal flow threshold value and the equipment data point position of the belt scale subsystem.

[0069] In this embodiment, the coal flow rate threshold includes a warning flow rate threshold and a dangerous flow rate threshold.

[0070] In other words, a specific driving event is configured in the event linkage submodule of the intelligent linkage module, and a threshold value is set for the warning flow of the belt scale according to the current flow situation of the belt scale, and the threshold value is configured in the driving event.

[0071] In step c, the event linkage submodule periodically reads the current coal flow from the real-time database, and triggers a corresponding event when it detects that the current coal flow exceeds the coal flow threshold.

[0072] In this embodiment, when it is detected that the current coal flow exceeds the warning flow threshold, a warning event is triggered; when it is detected that the current coal flow exceeds the dangerous flow threshold, a dangerous event is triggered.

[0073] In other words, once the event linkage submodule is configured, it reads data from the real-time database at the data storage layer based on the device locations configured in the driver event. It then compares this real-time data with the currently configured thresholds. If the real-time data exceeds the set threshold, the event linkage submodule executes the linkage plan, such as pushing an alarm, and transmits the device warning information to the hierarchical alarm module. The hierarchical alarm module then pushes the alarm information to the users who need to be notified based on the current alarm configuration.

[0074] In step d, the hierarchical alarm module executes a corresponding control method according to the event type.

[0075] In this embodiment, for dangerous events, an emergency stop control instruction is sent to the coal conveying program control subsystem through the event linkage submodule, and the coal conveying program control subsystem immediately executes the equipment emergency stop operation after receiving the instruction; for early warning events, the alarm information is pushed to the configuration display module, and early warning prompt information is generated on the operation interface.

[0076] In other words, the graded alarm module is graded according to the alarm situation. For alarms involving equipment safety failures, the alarm information is directly pushed to the event linkage submodule, and the emergency stop command of the coal conveying program control subsystem is triggered through the event linkage submodule; for events of the second alarm level, the alarm information is pushed to the configuration display module through the graded alarm module and displayed in the alarm bar to remind users of the existence of alarm events and suggest users to pre-process the current alarm.

[0077] Those skilled in the art will appreciate that, in addition to implementing the system and its various devices, modules, and units provided by the present invention in purely computer-readable program code, it is entirely possible to implement the same functions of the system and its various devices, modules, and units provided by the present invention in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, and embedded microcontrollers by logically programming the method steps. Therefore, the system and its various devices, modules, and units provided by the present invention can be considered a hardware component, and the devices, modules, and units included therein for implementing various functions can also be considered as structures within the hardware component; the devices, modules, and units for implementing various functions can also be considered as both software modules implementing the method and structures within the hardware component.

[0078] The above describes specific embodiments of the present invention. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art may make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. The embodiments of this application and the features in the embodiments may be combined with each other in any manner unless there is a conflict.

Claims

1. A fuel intelligent management and control system for a thermal power plant, characterized in that: include: The equipment system perception layer includes the shore electronic system, ship unloader subsystem, coal conveyor program control subsystem, intelligent coal yard subsystem, coal water and coal slag treatment subsystem, coal slime filter press subsystem, belt scale subsystem, sampling subsystem and belt vibration detection subsystem; The data access layer includes a driver module for collecting and converting device data from each subsystem of the device system perception layer; The data storage layer includes a real-time database and a relational database. The real-time database is used to store the device data collected and converted by the data access layer, and the relational database is used to store the basic data information and historical relationship data of each subsystem device; The business application layer includes a rights management module, an intelligent linkage module, a hierarchical alarm module, an intelligent reporting module, and a data interface module. The rights management module is used to implement multi-level rights control, granting different system rights to different user roles, and implementing rights control for personnel of different levels in different systems. The intelligent linkage module includes an event linkage module and a time linkage module. The hierarchical alarm module is used to manage alarm levels in subsystems and respond to alarms of different levels of different system devices in a hierarchical manner. The intelligent reporting module is used to generate data reports to provide users with a comprehensive understanding and analysis of the overall system operation status. The data interface module is used for data exchange between the system and other external systems, and data docking between systems is completed by opening up the data interface. The display interaction layer includes a configuration display module, a large-screen display module and a mobile application module. The configuration display module is used to display the real-time operating status of each subsystem, the large-screen display module is used to display the fuel and coal transportation process status, and the mobile application module is used for remote access.

2. The intelligent fuel management and control system for thermal power plants according to claim 1 is characterized in that: The shore electronic system includes a voltage monitoring unit, a current monitoring unit and an energy consumption metering unit.

3. The intelligent fuel management and control system for thermal power plants according to claim 1 is characterized in that: The ship unloader subsystem includes a grab bucket speed sensor, a load weight sensor and a coal unloading efficiency calculation unit.

4. The intelligent fuel management and control system for thermal power plants according to claim 1, characterized in that: The coal conveying program control subsystem includes a PLC controller, a belt conveyor speed regulating unit and a coal plow control unit.

5. The intelligent fuel management and control system for thermal power plants according to claim 1 is characterized in that: The intelligent coal yard subsystem includes a three-dimensional scanner, a coal pile modeling unit and a coal taking path planning unit.

6. The intelligent fuel management and control system for thermal power plants according to claim 1, characterized in that: The coal-water and coal-ash treatment subsystem includes a dosing control unit, a filter control unit and a sewage discharge cycle setting unit.

7. The intelligent fuel management and control system for thermal power plants according to claim 1, characterized in that: The coal slime filter press subsystem includes a filter press control unit, a water pump control unit and a coal cake conveying control unit.

8. The intelligent fuel management and control system for thermal power plants according to claim 1, characterized in that: The belt scale subsystem includes a high-precision weighing sensor, a flow data calibration module, a team coal delivery volume recording unit and a daily report generation unit; The sampling subsystem includes an automatic sampling mechanical arm and a sample transmission pipeline; The belt vibration detection subsystem includes an acceleration sensor, a vibration spectrum analyzer and a fault warning unit.

9. The intelligent fuel management and control system for thermal power plants according to claim 8, characterized in that: The interaction between the belt scale subsystem and the coal conveying program control subsystem includes the following sub-steps: Step a: The data access layer is connected to the belt scale subsystem through a dedicated driver interface, obtains the instantaneous coal flow collected by the belt scale sensor device in real time, and transmits the instantaneous coal flow to the real-time database of the data storage layer for storage; Step b, the event linkage submodule of the intelligent linkage module presets a coal flow threshold, and the coal flow threshold is associated with the equipment data point of the belt scale subsystem; Step c, the event linkage submodule periodically reads the current coal flow from the real-time database, and triggers a corresponding event when it detects that the current coal flow exceeds the coal flow threshold; In step d, the hierarchical alarm module executes a corresponding control method according to the type of the event.

10. The intelligent fuel management and control system for a thermal power plant according to claim 9, characterized in that: The coal flow rate threshold includes a warning flow rate threshold and a dangerous flow rate threshold. When it is detected that the current coal flow rate exceeds the warning flow rate threshold, a warning event is triggered; When it is detected that the current coal flow exceeds the dangerous flow threshold, a dangerous event is triggered; for the dangerous event, an emergency stop control instruction is sent to the coal conveying program control subsystem through the event linkage submodule, and the coal conveying program control subsystem immediately executes the equipment emergency stop operation after receiving the instruction; For early warning events, the alarm information is pushed to the configuration display module, and early warning prompt information is generated on the operation interface.

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